graphics gale has the single color edit function
in mode of over 256 colors, u have to use a custom pallete to use the feature
and in 256 or less its tehre by default
personally i feel gale is better than promotion
coz gale has layers, promotion doesnt
gale has many color modes, promotion sticks to 256 colors
gale has animation, promotion also does
so in other words, gale has a lil more than promotion along with everything else it has ( maybe something might be left out like the tile things and stuff )